remcos | 2003cb7cc8d8262b7975fcf9a2a9eb2b1aa7de32a5baffd2383ec4c251316ec9

General

Target

d087f8dd1e7e70b3ffbd788caf011d2e_JaffaCakes118.exe
Size

216KB
MD5

d087f8dd1e7e70b3ffbd788caf011d2e
SHA1

f0877184e79cb28125506f924e621161daaa17ba
SHA256

2003cb7cc8d8262b7975fcf9a2a9eb2b1aa7de32a5baffd2383ec4c251316ec9
SHA512

a3f51b4a77f73ddc38b46a32dc0c10ea0ac485adae41a03f239f8ce90b5164020ff7f3709637c06e329a6e3513d0c745c8851b2e323a2d8abf8eb7fffe8261eb
SSDEEP

3072:wzOZ5jj/J/c65GYLBV4IBPm5Ihwv/Idf8HRS6c6yhBzS3MHpQx9XEHMt:3Z5jj9c6ZFXPm5h3IdfyR1WBzSNW

Score

10^/10

remcos discovery persistence rat

Malware Config

Signatures

Remcos
Remcos is a closed-source remote control and surveillance software.
rat remcos

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-2412658365-3084825385-3340777666-1000\Control Panel\International\Geo\Nation	d087f8dd1e7e70b3ffbd788caf011d2e_JaffaCakes118.exe

Executes dropped EXE 1 IoCs

pid	Process
1084	HDPeal.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-2412658365-3084825385-3340777666-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\KLGmkG = "\"C:\\Users\\Admin\\AppData\\Roaming\\Microfiles2\\HDPeal.exe\""	HDPeal.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2412658365-3084825385-3340777666-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\KLGmkG = "\"C:\\Users\\Admin\\AppData\\Roaming\\Microfiles2\\HDPeal.exe\""	d087f8dd1e7e70b3ffbd788caf011d2e_JaffaCakes118.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1084 set thread context of 3304	1084	HDPeal.exe	97

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

System Location Discovery: System Language Discovery 1 TTPs 4 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	HDPeal.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	d087f8dd1e7e70b3ffbd788caf011d2e_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	PING.EXE

System Network Configuration Discovery: Internet Connection Discovery 1 TTPs 1 IoCs

Adversaries may check for Internet connectivity on compromised systems.

discovery

Internet Connection Discovery

T1016.001

pid	Process
4184	PING.EXE

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
4184	PING.EXE

Suspicious use of FindShellTrayWindow 4 IoCs

pid	Process
3172	d087f8dd1e7e70b3ffbd788caf011d2e_JaffaCakes118.exe
3172	d087f8dd1e7e70b3ffbd788caf011d2e_JaffaCakes118.exe
1084	HDPeal.exe
1084	HDPeal.exe

Suspicious use of SendNotifyMessage 4 IoCs

pid	Process
3172	d087f8dd1e7e70b3ffbd788caf011d2e_JaffaCakes118.exe
3172	d087f8dd1e7e70b3ffbd788caf011d2e_JaffaCakes118.exe
1084	HDPeal.exe
1084	HDPeal.exe

Suspicious use of SetWindowsHookEx 3 IoCs

pid	Process
3172	d087f8dd1e7e70b3ffbd788caf011d2e_JaffaCakes118.exe
1084	HDPeal.exe
1084	HDPeal.exe

Suspicious use of WriteProcessMemory 19 IoCs

description	pid	Process	procid_target
PID 3172 wrote to memory of 3648	3172	d087f8dd1e7e70b3ffbd788caf011d2e_JaffaCakes118.exe	91
PID 3172 wrote to memory of 3648	3172	d087f8dd1e7e70b3ffbd788caf011d2e_JaffaCakes118.exe	91
PID 3172 wrote to memory of 3648	3172	d087f8dd1e7e70b3ffbd788caf011d2e_JaffaCakes118.exe	91
PID 3648 wrote to memory of 4184	3648	cmd.exe	93
PID 3648 wrote to memory of 4184	3648	cmd.exe	93
PID 3648 wrote to memory of 4184	3648	cmd.exe	93
PID 3648 wrote to memory of 1084	3648	cmd.exe	96
PID 3648 wrote to memory of 1084	3648	cmd.exe	96
PID 3648 wrote to memory of 1084	3648	cmd.exe	96
PID 1084 wrote to memory of 3304	1084	HDPeal.exe	97
PID 1084 wrote to memory of 3304	1084	HDPeal.exe	97
PID 1084 wrote to memory of 3304	1084	HDPeal.exe	97
PID 1084 wrote to memory of 3304	1084	HDPeal.exe	97
PID 1084 wrote to memory of 3304	1084	HDPeal.exe	97
PID 1084 wrote to memory of 3304	1084	HDPeal.exe	97
PID 1084 wrote to memory of 3304	1084	HDPeal.exe	97
PID 1084 wrote to memory of 3304	1084	HDPeal.exe	97
PID 1084 wrote to memory of 3304	1084	HDPeal.exe	97
PID 1084 wrote to memory of 3304	1084	HDPeal.exe	97

C:\Users\Admin\AppData\Local\Temp\d087f8dd1e7e70b3ffbd788caf011d2e_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\d087f8dd1e7e70b3ffbd788caf011d2e_JaffaCakes118.exe"
1⤵
- Checks computer location settings
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:3172
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\install.bat" "
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:3648
- - C:\Windows\SysWOW64\PING.EXE
    PING 127.0.0.1 -n 2
    3⤵
    - System Location Discovery: System Language Discovery
    - System Network Configuration Discovery: Internet Connection Discovery
    - Runs ping.exe
    PID:4184
- - C:\Users\Admin\AppData\Roaming\Microfiles2\HDPeal.exe
    "C:\Users\Admin\AppData\Roaming\Microfiles2\HDPeal.exe"
    3⤵
    - Executes dropped EXE
    - Adds Run key to start application
    - Suspicious use of SetThreadContext
    - System Location Discovery: System Language Discovery
    - Suspicious use of FindShellTrayWindow
    - Suspicious use of SendNotifyMessage
    - Suspicious use of SetWindowsHookEx
    - Suspicious use of WriteProcessMemory
    PID:1084
  - - C:\Windows\SysWOW64\svchost.exe
      C:\Windows\SysWOW64\svchost.exe
      4⤵
      PID:3304

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

Query Registry

1

T1012

Remote System Discovery

1

T1018

System Information Discovery

2

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

System Network Configuration Discovery

1

T1016

Internet Connection Discovery

1

T1016.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\install.bat

Filesize
104B

MD5
9e63d0d86376e45cfd856537efb86171

SHA1
566c68ff9c1f2fa5a75207258b1092447e81fcce

SHA256
6f6f2f859525c5c8668364d9feb6da278eee5ed59580a5184e8dda65832cce7d

SHA512
d5359f1a3701a010c3fb90faac3da226881c6777dd7e1bfaf475cef0f18f6dfab9f317ac3431daa77869b2872f5a5c9a16cad10bc51a5d127219a095df7ccb98

Download Submit
C:\Users\Admin\AppData\Roaming\Microfiles2\HDPeal.exe

Filesize
216KB

MD5
d087f8dd1e7e70b3ffbd788caf011d2e

SHA1
f0877184e79cb28125506f924e621161daaa17ba

SHA256
2003cb7cc8d8262b7975fcf9a2a9eb2b1aa7de32a5baffd2383ec4c251316ec9

SHA512
a3f51b4a77f73ddc38b46a32dc0c10ea0ac485adae41a03f239f8ce90b5164020ff7f3709637c06e329a6e3513d0c745c8851b2e323a2d8abf8eb7fffe8261eb

Download Submit
memory/1084-23-0x0000000000400000-0x000000000041C000-memory.dmp

Filesize
112KB

Download
memory/1084-19-0x0000000000400000-0x000000000041C000-memory.dmp

Filesize
112KB

Download
memory/1084-25-0x0000000000400000-0x000000000043A000-memory.dmp

Filesize
232KB

Download
memory/1084-22-0x0000000000400000-0x000000000043A000-memory.dmp

Filesize
232KB

Download
memory/1084-31-0x0000000000400000-0x000000000043A000-memory.dmp

Filesize
232KB

Download
memory/1084-32-0x0000000000400000-0x000000000043A000-memory.dmp

Filesize
232KB

Download
memory/3172-10-0x0000000000400000-0x000000000041C000-memory.dmp

Filesize
112KB

Download
memory/3172-7-0x0000000000400000-0x000000000043A000-memory.dmp

Filesize
232KB

Download
memory/3172-3-0x0000000000400000-0x000000000041C000-memory.dmp

Filesize
112KB

Download
memory/3304-26-0x0000000000400000-0x000000000041C000-memory.dmp

Filesize
112KB

Download
memory/3304-29-0x0000000000400000-0x000000000041C000-memory.dmp

Filesize
112KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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